Sierra Iron Ore Announces Favorable Ore Grades of Over 55% Fe

May 8, 2013

VANCOUVER, May 8, 2013 /CNW/ – SIERRA IRON ORE CORP (the “Company”) is pleased to announce the results of assays of samples taken and sent for laboratory testing. Two of the samples yielded greater than 55% Fe content. The 3^rd sample from the Mazomique property requires further testing.

	% Fe	%S
Brasiles	55.21	0.79
El Creston	55.88	0.35

The assays were carried out at the in-house analytical laboratory of Trafigura in Manzanilla, Colima, Mexico. Trafigura is a leading international commodities and logistics company with worldwide interests in mining and mineral development.

“We are encouraged about the results from the iron ore samples,” says Wally Boguski, President and CEO. “Achieving greater than 55% Fe content provides the company with a basis for developing strategic options for the development and production for the company’s properties.”

Each of the samples consisted of 6kgs of iron-bearing material composited along lengths of 200 feet (61m) in magnetite pods and lenses of up to 15 metres in thickness. Although the iron properties are several kilometers apart, they possess a common style of mineralization characterized by magnetite and hematite-rich bodies occurring in skarn developed near the contact of Cretaceous limestone and younger intrusive of either granodiorite or monzonite stocks and batholiths. Further comparative samples are pending.

The company is pleased to announce that it will also grant 682,580 company Stock Options to various directors, officers and consultants, with an exercise price of $0.40 cents per common share, for up to five years. The options will been granted in accordance with the terms of its 10-per-cent rolling stock option plan approved on December 7, 2010, and the policies of the TSX Venture Exchange.

http://www.sierrairon.com/news.html